Study on thermal crack characteristics of granite in Shandong Province, China under different temperatures and heating/ cooling treatments

被引：1

作者：

Zhang, Weiqiang ^{[1
,2
]}

Shi, Zhanghao ^{[1
]}

Zhang, Xin ^{[2
,3
]}

Wang, Yangzhou ^{[1
,4
]}

Wu, Yun ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Resources & Earth Sci, Xuzhou 221116, Jiangsu, Peoples R China

[2] Shandong Energy Grp, Jinan 250101, Shandong, Peoples R China

[3] China Univ Petr Huadong, Qingdao 266580, Shandong, Peoples R China

[4] South Amer Co Ltd Shandong Energy Grp, Qingdao 266000, Shandong, Peoples R China

来源：

CASE STUDIES IN THERMAL ENGINEERING | 2024年 / 61卷

关键词：

Granite; Thermal crack; High temperature; Heating/cooling path; Crack mechanism; MECHANICAL-PROPERTIES; ROCK; PERMEABILITY; DAMAGE; EVOLUTION; STRENGTH; MODEL;

D O I：

10.1016/j.csite.2024.105127

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The qualitative and quantitative analysis of crack initiation characteristics, extended procedure, and crack network morphology of rock under different temperatures and heating/cooling paths was conducted in order to delve deeper into the mechanism of thermal cracking, and the analytical perspectives mainly include microstructure, thermodynamics, and mineral crystal properties. Research results indicate that 200-300 degrees C and 600 degrees C are two obvious mutation points of water-cooled samples, while air-cooled samples show mutation points around 600 degrees C. The initiation positions of thermal cracking under all temperature paths are relatively similar, with intergranular crack located between particles at the edge of the sample or intercrystalline cracks in the middle of feldspar or quartz aggregates. Slow heating and rapid cooling contribute to the complexity of the thermal crack network, and rapid heating can form larger sized thermal cracks. The process of thermal cracking can be divided into three stages: initiation of small cracks, joint development of main cracks and small cracks, and interconnection of cracks to form a network structure. The thermal cracking mechanism is attributed to differences in expansion and thermal conductivity among various crystals.

引用

页数：13

共 34 条

[1] Influence of thermal damage on physical properties of a granite rock: Porosity, permeability and ultrasonic wave evolutions [J].

Chaki, S. ;

Takarli, M. ;

Agbodjan, W. P. .

CONSTRUCTION AND BUILDING MATERIALS, 2008, 22 (07) :1456-1461

[2] Evolution of thermal damage and permeability of Beishan granite [J].

Chen, Shiwan ;

Yang, Chunhe ;

Wang, Guibin .

APPLIED THERMAL ENGINEERING, 2017, 110 :1533-1542

[3] Numerical investigation on origin and evolution of polygonal cracks on rock surfaces [J].

Chen, Tiantian ;

Foulger, Gillian R. ;

Tang, Chun'an ;

Mathias, Simon A. ;

Gong, Bin .

ENGINEERING GEOLOGY, 2022, 311

[4] Microstructural Controls on Thermal Crack Damage and the Presence of a Temperature-Memory Effect During Cyclic Thermal Stressing of Rocks [J].

Daoud, Ali ;

Browning, John ;

Meredith, Philip G. ;

Mitchell, Thomas M. .

GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (19)

[5] Effect of Temperature on Macroscopic and Microscopic Properties of Sandstone From Qidong Coal Mine [J].

Deng, Long-Chuan ;

Li, Xiao-Zhao ;

Wang, Ying-Chao ;

Wu, Yun ;

Huang, Zhen ;

Jiang, Chun-lu .

ROCK MECHANICS AND ROCK ENGINEERING, 2022, 55 (01) :71-90

[6] Effect of thermal damage on mineralogical and strength properties of basic volcanic rocks exposed to high temperatures [J].

Ersoy, Hakan ;

Kolayli, Hasan ;

Karahan, Murat ;

Karahan, Hilal Harputlu ;

Sunnetci, Muhammed Oguz .

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2019, 78 (03) :1515-1525

[7] Real-time permeability evolution of thermally cracked granite at triaxial stresses [J].

Feng, Zijun ;

Zhao, Yangsheng ;

Zhang, Yuan ;

Wan, Zhijun .

APPLIED THERMAL ENGINEERING, 2018, 133 :194-200

[8] Thermal stress-induced microcracking in building granite [J].

Freire-Lista, D. M. ;

Fort, R. ;

Varas-Muriel, M. J. .

ENGINEERING GEOLOGY, 2016, 206 :83-93

[9] Quantification of microcrack characteristics and implications for stiffness and strength of granite [J].

Griffiths, L. ;

Heap, M. J. ;

Baud, P. ;

Schmittbuhl, J. .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2017, 100 :138-150

[10] Study on the damage characteristics and damage model of organic rock oil shale under the temperature effect [J].

Zhao G. ;

Chen C. ;

Yan H. ;

Hao Y. .

Arabian Journal of Geosciences, 2021, 14 (8)

← 1 2 3 4 →